Since this thread has come up again, I have to relate my near spontaneous orgasm experience.
We're evicting a tenant right now and it has become complicated and messy. The trial, which usually takes 10 - 15 minutes, took 4 1/2 hours spread out over 2 days. After weeks of stress leading up to it, the trial itself was intensely stressful.
At the very end, when it was clear the judge was about to rule, for some reason I felt incredibly aroused/excited/happy as though all senses were on 100%. I really thought that if the judge ruled in our favor that I would have had my first spontaneous O. It really felt imminent.
Sadly, the judge said he would decide later. We would hear the result through the mail. What a disappointment! Denied what was possibly my only chance for a spontaneous O.
I learned a week later that we won our case, but I wasn't fully fired up anymore. No spontaneous O.